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. i J. VER: MEHR MIXING momma I ori inal Filed ma 1923 3 se Aug. 14, rsza- 4 Re; 17,067'

J. VER MEHR MIXING CHINE Original Filed llay 2, 1923 :5 Sheets-Sheet 3 be employed generally where it is desired to Reissued Aug. 14, 1928.

} E su s PATENT JOHN 1mi LONDON, rew nr rxino MACIHINE.

Original No. 1,583,892, dated May-11,1526, Serial No. 638,533, filed May 12, 1923.

. l filed December 2231927.- Serial No 243,1oe.

This invention has reference to mixing machines whereby various ingredients or substances may be intimately admixed or commingled. v v a i More particularly the inventionis concerned with machines for mixing concrete or the like although it is to be understood that its sphere of usefulness is not to be considered as restricted to this specific purpose as apparatus according to myflinvention may produce a thorough admixture of various ingredients or substances. y

It has been found desirable in order to produce uniform mixtures expeditiously however that the constituent parts of the material should be fed into the drum in batches of auged proportions and that the drum shou effectively mixing severalof such batches at the same'time'in separatedrelation.

Accordingly the present invention consists in a mixing machme wherein the substances or ingredients to to a rotatable mixing drum by a combined be mixed are fed in batches elevating and automatic gaugingfdevice whereby the correct proportions of the sevm1 substances are introduced into the drum which is'provided with afplurality of chambers or compartments through which the substances to be mlxed are caused to pass in a plurality of separated batches-and in each of which the batches are mixed for example means of blades or bafiles mountedttherein a batch of completely mixed material being discharged at {each complete revolution of the drum. y

The mproved mixing machine includes in its embodiment as elevatordevice comprising belts or chains provided with buckets which are adapted during operation of the apparatus to pickup material frorn'a hop per and convey itto the elevated end of an inclined mixing drum. The hopper is divided into an partments one for each of the several substances to be mixed and means "are" provided for levelling the material in eachbucket as it emerges from terial'is extracted from thehopper -by each *bucket- The bucket-s are so arranged that d be such as to be capable of" appropriate number of comthe "hopper so that an ap-' proximately predetermined quantity of ma- Applirratior for reissue the contents are. introduced-s uch as the "aid of an appropriate chute or hopper-1nto the mixing drum proper which consists of aapreferably cylindrical shell or drum re- -volvably mounted about an'inclined axis and having a plurality of compartments communicating 'with'each other each of said com-- partments having one or more mixing blades or bafiles whereby the substances are lifted and turned over as the drum rotates and transferred'tothe next following compart ment by the combined action of gravity and the aforesaid blades or baflles the contents of the final compartment of the drum being discharged at each complete-revolution of the drum. The mixing drum is revolvab ly mounted at such'aninclination as to ensure that substances introduced at zone-end will travel-by the combined action of gravity and the aforesaid blades or battles toward and be discharged from the opposite end, of the drum as this latter is rotated.

The aforesaid drum is dividedinto a plurality of compartments rby transversefpartitions having a portion or portions cutaway whereby material under treatment may pass from one compartment to the other the opening or openings in adjacent partitions preferablybeing staggered relatively to each other that is to say theopening in one par- .titionis opposed diametrically to the open- 1ng in the adjacent partition. 1

The interior of each of the aforesaid compartments isprovided with a lifting blade or blades preferably extending parallel with Jthe ax1s of rotation ofthe drum'although they may be arranged in angular direction relatively thereto.

A suitable framing is provided adapted to support theaforesaid elevator and the mixing druinwhich latter may be mounted by means of trunnions or by means of la spindle passing through the drum and suitable mechanism provided for rotating said drumandactuating the elevator.

In order that the invention may be clearly understood reference will now be had to the accompanying drawings wherein a preierred embodiment of the invention is illusa trated way of example.

Fig. 1 is an elevation of one. form of ap par-atlas:

Fig. 2 is a plan view thereof. Fig. is a section on theline a a, Fig. 1

drawn to a larger scale.

i I -Fig; 4 is a :the apparatus-is mounted said frame being supported on wheelsc. I -Mounted on the frame 1) near one end :theretfi is a .trunk'or casing d within which are supported the guiderails e servingv to I guide an endless conveyororelevator f to which .the'buckets g areattached. The ele- I vator is operated by a gear 72. mounted on'a spindle i driven by, a chain belt-or the like 7 j from a spindle is the'latter-being driveniby 1 carried by-the'frame b.

The buckets g arev arranged a belt or other transmission fromc an engine in series or sets on the elevator f aud each'set inthe present embodiment and.- as applied to' a concrete mixer comprises-three buckets my and .0 Fig.4 the bucket m. being adapted to con- I vey ballastto-theymixingldrum the'bucket a cement and the bucketo sand. t I

A'hopper p. issupported on the frame 6 at the bottom of'thejelevator trunk or'casing'd' and is provided with three compare, 'menfts-p, 9,..1 towhich ballastcement and; sand are fed respectively. {The hop er p is preferably capableof-being easily etached from the frame-b; Thebuckets m, n, '0 when the elevator.

ments in'the hopper and'becomeffilled with the respectiveingredients and, in orderlto,

remove the superflous material .from said buckets scrapers aar'e provided said scrapers"- being carried on arms 25' mounted on; a spin- I ..dle'u carriedby :the hop er-pCf- The. buckets "when passing through t e compartments'in the casing. come into contactwith the scraping device which removes the surplus ma-, terialjfrom' thefbuckets whereby as I -emerge from. the casing theyzwill each -tain a predetermined quantity of material which is then, dischargedasthebucketsgare elevated into a chute 0 and are'thus intro- I I duced into the mixing drum w. Y

I on the. frame 1) and at one end thereof is an t; I

compartmentv ofthe drum ,Where they are The mixing drumw is revolvably mounted fannular geara: which meshes with a pinion :divided into a plurality y mountedon the shaft The drum is of-compartments by transverse partitions sand it will be'seen .from Figure 1 that each partition hasa poi tion'cut away wherebythe material under. treatment can pass from one compartment section through theelevatingthey 4 con- I per in bulk and after the machine started the operation is automatic iirthe and introduces I I I I the mixing drum where theyare mixedin The interiorof each compartment is provided With a lifting blade a Fig. 3 which extends parallel with the axis of the drum.

As shown in Fig. 1 the drum is built up of a number of sections each of which comprises acylindrical shell having flanges whereby it maybe bolted 'or otherwise secured to other simllar sections one end of each section being flPiOVldGd. with the. aforementioned partition 'While the-other, end is open the interior of each section having 'mountedtherein the lift.

readily be efiectedv Oneend of the drum ad isch arge open-v m ttently discharged and a splash guard. 0

is arranged attheend of the drum.

vWater is introduced quantitiesthrough a funnel d supportedon the chute 2). Thewater may be sprayed on to .the materials or it may be,introducedinto the chute 'v in any, other convenientmanner.

. drawbar eflis provided Itoifacilitate I so ing blades a so that by securing a number of I such sectlonstogether a drumcontainlngany desired number,

'ing 6' through whichlthe concrete is interv in. predetermined transport of the apparatus from one place to I supported on endless chain tracks.

' If it is-desire d. to change the proportions another andif desired the frame bmay' be .of the various'ingredients this can easily be effected by g removi ngsthe buckets from. the

elevator andf substituting buckets of such is operated to pass through thel.compartsizes-as to .give-thefproportions desired or the buckets may provi ded with movable partitions I which can be adjustedas and when desired.- v.

The compartments thehopperv maybe providedwithmeans such as, name plates f for indicating the contents thereof.

. In operating a mixing ,machine constructed I in ;,accordan c e .with this invention the: several substances .tobe mixed are fed into'the' separate compartments of the elevator hophas been sense that the elevator picks up a predeter mined quantity. of each of the ingredients them at the elevated end the first compartmentthereoi. As thisfdrum is rOtated the contents pass to the second submitted to afurtlier mixing and While this is occurring al fresh charge isintroduced to the drum the elevator.

3 It will be, seen the discharge end thereof. By this means the gauged proportions of the several. ingredients are accurately maintained throughout the whole of the mixing operation.

hat I claim is 1. A mixing machine comprising in combination a rotatable mixing drum, partitions dividing said drumfinto a number of separate intercommunicating mixing compartments, means for feeding gauged batches of the several ingredients to be mixed into said drum at predetermined intervals, means whereby the contents of one mixing compartment of said drum pass into the next adjacent compartment during rotation ofsaid drum at said predetermined intervals, and means whereby batches oi completely mixed material are discharged from said drum at said predetermined intervals, whereby a plurality of gauged.

batches of said ingredients are mixed in said drum in separated relation at the same time. I

2. A mixing machine comprising incombination a rotatable mixing drum, partitions dividing said drum into a number of separate intercominunicating 1illXll1g,COlIl partments, means for feeding gauged batches of the several ingredients to be mixed into said drum at each complete revolution thereof, means whereby tl econtents of one compartment pass into the next adjacent compartment at each complete revolution of said drum and means whereby a batch of completely mixed material is discharged at each complete revolution of said drum whereby a plurality of gauged batches of ingredients are passed through said drum and mixed lIlSQPELliItGCl relation at the same time.

3. A mixing machine comprising in .COliibination a rotatable mixing drum, partitions dividing said drum into a plurality oi intercommunicating mixing i compartments, a combined elevating and automatic gauging device for feeding batches of the several ingredients of the desired mixture in gauged proportions into said drum at predetermined intervals, means'whereby the con- 'tents of one compartment of said drum pass into the next adjacent compai'tinentat said predetermined intervals during rotation of, said drum, and means whereby batches of completely mixed material are discharged from the machine at predetermined intervals during rotation of said drum, whereby the said ingredients are mixed in said drum in a plurality of separated gauged batches.

4. A mixing machine comprising in combination an inclined rotatable mixing drum, partitions dividing said drum into a plurality of compartments, said partitions havthereof. In testimony whereof I have signed my ing. each an opening which is staggered in relation to the opening in the next ad acent partition, a combined elevating and automatic gauging device for feeding batches of the several ingredients of the desired mixture in gauged proportions'into said drum and means whereby batches of completely mixed material are dischar ed from the drum at predetermined intervals during revolution thereof, whereby said ingredicuts are passed through and mixed in said drum in a plurality of separated gauged batches. i

5. A mixing machine as claimed in claim 3 in which a mixing blade is provided 1I1x each compartment.

6. A mixing machine comprising in com bination an elevator device including belts provided with buckets, a hopper having a series ot compartments each to contain one ingredient of the mixture, an inclined rotatable mixing drum having a series of transverse intercominunicating compartments, means for causing said buckets to pass gauged proportions to said drum, means whereby the contents of one compartment pass to the next adyacent compartment through the compartments of said hopper and deliver batches of said ingredients in during revolution of said drum, and means wherebybatches of completely mixed material are delivered from said drum at predetermined intervals during revolution thereof, whereby a plurality of gauged batches of ingredients are passed through and mixed in said drum in separated relation at the same time.

7. A mixing machine comprising a rotatable mixing drum including a plurality of said drum at each complete revolution name to this specification.

JOHN VER MEHR.

d batchesuof ingredients are mixedin separated relation in said drum at the same time and means whereby a batch ofcompletely mixed material is delivered from 

